(PHP 4, PHP 5, PHP 7)
usleep — Delay execution in microseconds
usleep ( int $micro_seconds ) : void
Delays program execution for the given number of microseconds.
micro_seconds
Halt time in microseconds. A microsecond is one millionth of a second.
Note: On Windows, the system may sleep longer that the given number of microseconds, depending on the hardware.
No value is returned.
Example #1 usleep() example
<?php // Current time echo date('h:i:s') . "\n"; // wait for 2 seconds usleep(2000000); // back! echo date('h:i:s') . "\n"; ?>
The above example will output:
11:13:28 11:13:30
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https://www.php.net/manual/en/function.usleep.php